Huawei AP7052DN User Manual

AP7052DN

Hardware Installation and Maintenance Guide

Issue

01

Date

2017-12-29

HUAWEI TECHNOLOGIES CO., LTD.

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Huawei Proprietary and Confidential

i

No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address:

Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China

Website:

http://e.huawei.com

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Overview

Symbol

Description

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal injury.

Calls attention to important information, best practices and tips.

NOTE is used to address information not related to personal injury, equipment

This document describes hardware features of the AP7052DN and AP7152DN and provides basic installation methods.

Intended Audience

This document is intended for network engineers responsible for WLAN installation and maintenance. You should have experience in network device installation and maintenance.

About This Document

Symbol Conventions

The symbols that may be found in this document are defined as follows.

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Symbol

Description

damage, and environment deterioration.

Change History

Changes between document issues are cumulative. The latest document issue contains all changes made in previous issues.

Issue 01 (2017-12-29)

Initial commercial release

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Contents

About This Document ............................................................................................................... ii

1 Product Overview..................................................................................................................... 1

1.1 Device Structure .................................................................................................................................................... 1

1.2 Indicator Description ............................................................................................................................................. 3

1.3 Basic Specifications ............................................................................................................................................... 4

1.4 Ordering Information ............................................................................................................................................. 5

2 AP Installation .......................................................................................................................... 6

2.1 Preparing for Installation ....................................................................................................................................... 6

2.2 Installation Flowchart ............................................................................................................................................ 8

2.3 Unpacking the Equipment ...................................................................................................................................... 8

2.4 Determining the Installation Position ..................................................................................................................... 9

2.5 Installing an IoT Card ................................ ................................................................................................ ...........10

2.6 Installing the AP ...................................................................................................................................................12

2.6.1 Installing the Device on a Wall ...........................................................................................................................12

2.6.2 Installing the Device on a Ceiling.......................................................................................................................14

2.6.3 Installing the Device on a T-rail..........................................................................................................................15

2.6.4 Installing an AP into a Ceiling ............................................................................................................................16

2.6.5 Removing an AP ................................................................................................................................................18

2.7 Cable Connection .................................................................................................................................................19

2.8 Connecting the Security Lock ...............................................................................................................................22

2.9 Checking the Device After Installation .................................................................................................................. 23

2.10 Powering on the AP ............................................................................................................................................24

3 Logging In to the Device ....................................................................................................... 25

3.1 Logging In to the Device Using STelnet/Telnet .....................................................................................................25

3.2 Logging In to the Device Through the Web System ...............................................................................................27

3.3 Logging In to the Device Through the Console Port ..............................................................................................29

4 Hardware Failures .................................................................................................................. 32

4.1 A Device Fails to Be Powered On .........................................................................................................................32

5 Appendix ................................................................................................................................. 35

5.1 On-site Cable Assembly and Installation ...............................................................................................................35

5.1.1 Cable Assembly Precautions ..............................................................................................................................35

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5.1.2 Assembling Power Cables ................................................................................................................................ ..36

5.1.2.1 Assembling a DC 2-Pin Round Connector (A) .................................................................................................36

5.1.2.2 Assembling a DC 2-Pin Round Connector (B) .................................................................................................41

5.1.2.3 Assembling the OT Terminal and Power Cable ................................................................................................48

5.1.2.4 Assembling the JG Terminal and Power Cable .................................................................................................51

5.1.2.5 Assembling the Cord End Terminal and the Power Cable .................................................................................53

5.1.3 Assembling Ethernet Cables ...............................................................................................................................57

5.1.3.1 Assembling the Shielded RJ45 Connector and Ethernet Cable ..........................................................................57

5.1.3.2 Assembling an Optimized Shielded RJ45 Connector and SFTP Network Cables ..............................................62

5.1.3.3 Assembling an Integrated Shielded RJ45 Connector and SFTP Network Cables ................................ ...............67

5.1.3.4 Assembling a Shielded RJ45 Connector and an FTP Network Cable ................................................................71

5.1.3.5 Assembling an Unshielded RJ45 Connector and Ethernet Cable .......................................................................76

5.1.3.6 Checking the Appearance of Contact Strips .....................................................................................................78

5.1.3.7 Testing the Connection of Assembled Cables ...................................................................................................81

5.1.3.8 Common Network Cable Faults and Preventive Measures ...............................................................................84

5.1.4 Assembling Feeders ...........................................................................................................................................85

5.1.4.1 Assembling the Straight Male Coaxial N Connector and the 1/2'' Feeder ..........................................................85

5.1.4.2 Assembling a Straight Male Coaxial N Connector and an RG8U Feeder ..........................................................88

5.1.5 Installing Cable Accessories ...............................................................................................................................94

5.1.5.1 Precautions for Installing Cable Accessories ....................................................................................................94

5.1.5.2 Installing Power Adapters ...............................................................................................................................95

5.1.5.2.1 Installing the OT Terminal............................................................................................................................95

5.1.5.2.2 Installing the Cord End Terminal ..................................................................................................................98

5.1.5.2.3 Installing a 2-Pin Round Connector and a DC Power Cable ..........................................................................99

5.1.5.3 Installing Ethernet Adapters .......................................................................................................................... 103

5.1.5.3.1 Installing a Shielded Ethernet Connector .................................................................................................... 103

5.1.5.3.2 Installing an Unshielded Ethernet Connector .............................................................................................. 104

5.1.5.4 Installing Fiber Connectors ................................ ........................................................................................... 106

5.1.5.4.1 Cleaning Fiber Connectors ......................................................................................................................... 106

5.1.5.4.2 Installing an FC Fiber Connector ................................................................................................................ 107

5.1.5.4.3 Installing an LC Fiber Connector ................................................................................................................ 108

5.1.5.4.4 Installing the SC Fiber Connector ................................ ............................................................................... 110

5.1.5.4.5 Installing an MPO Connector ..................................................................................................................... 111

5.1.6 Replacing the Mold of the Crimping Tool......................................................................................................... 113

5.2 Environmental Requirements for Device Operation ............................................................................................. 116

5.2.1 Environmental Requirements for an Equipment Room ..................................................................................... 116

5.2.1.1 Requirements for Selecting a Site for an Equipment Room ............................................................................ 116

5.2.1.2 Equipment Room Layout .............................................................................................................................. 117

5.2.1.3 Construction Requirements for the Equipment Room .................................................................................... 118

5.2.1.4 Equipment Room Environment ..................................................................................................................... 119

5.2.1.5 Requirements for Corrosive Gases ................................................................................................................ 120

5.2.1.6 Requirements for ESD Prevention ................................................................................................................. 121

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5.2.1.7 Electromagnetism Requirements for the Equipment Room ............................................................................ 121

5.2.1.8 Requirements for Lightning Proof Grounding ................................................................................................ 121

5.2.2 Requirements for Power Supply ....................................................................................................................... 123

5.2.2.1 Requirements for AC Power Supply .............................................................................................................. 123

5.2.2.2 Recommendations for AC Power Supply ....................................................................................................... 124

5.2.2.3 Requirements for DC Power Supply .............................................................................................................. 124

5.2.2.4 Recommendations for DC Power Supply ....................................................................................................... 125

5.3 Equipment Grounding Specifications .................................................................................................................. 126

5.3.1 General Grounding Specifications .................................................................................................................... 126

5.3.2 Grounding Specifications for an Equipment Room ........................................................................................... 126

5.3.3 Grounding Specifications for Devices .............................................................................................................. 126

5.3.4 Grounding Specifications for Communications Power Supply .......................................................................... 127

5.3.5 Grounding Specifications for Signal Cables...................................................................................................... 127

5.3.6 Specifications for Laying Out Grounding Cables .............................................................................................. 128

5.4 Engineering Labels for Cables ............................................................................................................................ 128

5.4.1 Introduction to Labels ...................................................................................................................................... 129

5.4.1.1 Label Materials ............................................................................................................................................. 129

5.4.1.2 Type and Structure ........................................................................................................................................ 129

5.4.1.3 Label Printing ............................................................................................................................................... 131

5.4.1.4 Writing Labels .............................................................................................................................................. 133

5.4.1.5 Attaching Labels ........................................................................................................................................... 134

5.4.1.6 Contents of Engineering Labels ..................................................................................................................... 136

5.4.1.7 Precautions for Using Engineering Labels ..................................................................................................... 137

5.4.2 Engineering Labels for Optical Fibers .............................................................................................................. 137

5.4.2.1 Labels for the Optical Fibers Connecting Devices .......................................................................................... 137

5.4.2.2 Labels for the Optical Fibers Connecting the Device and an ODF .................................................................. 138

5.4.3 Engineering Labels for Network Cables ........................................................................................................... 140

5.4.4 Engineering Labels for User Cables ................................................................................................................. 141

5.4.5 Engineering Labels for Power Cables ............................................................................................................... 142

5.4.5.1 Engineering Labels for DC Power Cables ...................................................................................................... 142

5.4.5.2 Engineering Labels for AC Power Cables ...................................................................................................... 144

5.5 Guide to Using Optical Modules ................................................................................................ ......................... 145

5.6 Fault Tag ............................................................................................................................................................ 148

5.7 Installation Checklist .......................................................................................................................................... 149

5.8 Guide to Making Drip Loops .............................................................................................................................. 156

5.9 Power Adaptation Solution ................................................................................................................................. 158

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About This Chapter

Model

Appearance

The AP7052DN and AP7152DN have the following advantages:



4x4 MU-MIMO



Good service support capabilities



High reliability



High security



Simple network deployment



Automatic AC discovery and configuration



Real-time management and maintenance

1 Product Overview

In compliance with IEEE 802.11ac, the AP7052DN and AP7152DN support a theoretical rate of up to 3.46 Gbit/s, greatly improving wireless user experience.

The AP7052DN and AP7152DN provide highest-quality wireless services for mobile office, high-density scenarios, elementary education, and higher education. They can be flexibly deployed in different environments.

A cloud AP must be used together with a cloud server.

1.1 Device Structure

1.2 Indicator Description

1.3 Basic Specifications

1.4 Ordering Information

1.1 Device Structure

Table 1-1 shows the appearance of the AP7052DN and AP7152DN.

Table 1-1 Appearance of the AP

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Model

Appearance

AP7052 DN

No.

Name

Description

1

Security slot

Connects to a security lock.

2

USB port

Connects to a USB flash drive or other storage devices to extend the storage space of the AP. The USB2.0 standard is supported.

3

Default

Restores factory settings and restarts the device when you hold down the button more than 3 seconds.

4

CONSOLE

Connects to a maintenance terminal for AP configuration and management.

5

GE/PoE_IN

10/100/1000M port that connects to the wired Ethernet and supports PoE input.

6

5/2.5GE/PoE_ IN

100M/1000M/2.5G/5G port that connects to the wired Ethernet and supports PoE input.

7

DC 48V

Connects a power adapter to the AP.

8

Radio port

Connects an antenna to an IoT card through a radio cable.

9

2.4G/5G

Connects a 2.4 GHz or 5 GHz antenna to the AP to send and receive wireless signals.The port type is RP-SMA-K.The port is applicable only to an AP that supports external antennas.

10

5G

Connects a 5 GHz antenna to the AP to send and receive wireless signals.The port type is RP-SMA-K.The port is applicable only to an AP that supports external antennas.

Table 1-2 describes ports on the AP7052DN

Table 1-2 Interface description

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Type

Color

Status

Description

Default status after power-on

Green

Steady on

The AP is just powered on and the software is not started yet.

Software startup status

Green

Steady on after blinking once

After the system is reset and starts uploading the software, the indicator blinks green once. Until the software is uploaded and started, the indicator remains steady green.

Running status

Green Blinking

once every 2s (0.5 Hz)



The system is running properly, the Ethernet connection is normal, and STAs are associated with the AP.



The system enters the Uboot CLI.

Blinking

The system is running properly, the Ethernet



The AP supports the following power supply modes: PoE power supply and DC power supply.



When the AP uses the DC power supply, use a power adapter for power supply; otherwise, the AP may be damaged.



For power adapter models, see 5.9 Power Adaptation Solution.

1.2 Indicator Description

The AP7052DN and AP7152DN provide only a single indicator, as shown in Figure 1-1.



The indicator is located inside the panel, which turns on after the AP is powered on.



Indicator colors may vary slightly at different temperature.

Figure 1-1 Indicator

Table 1-3 Description about the single indicator

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Type

Color

Status

Description

once every 5s (0.2 Hz)

connection is normal, and no STA is associated with the AP. The system is in low power consumption state.

Alarm

Green

Blinking once every

0.25s (4 Hz)



The software is being upgraded.



After the software is loaded and started, the AP requests to go online if it works in Fit AP or cloud-based management mode. The indicator remains in this state before the AP successfully goes online.



The AP works in Fit AP or cloud-based management mode and fails to go online.

Fault

Red

Steady on

A fault that affects services has occurred, such as a DRAM detection failure or system software loading failure. The fault cannot be automatically rectified and must be rectified manually.

Item

Description

Physical specifications

Dimensions (H x W x D)

52 mm × 220 mm × 220 mm Weight  AP7052DN: 1.68 kg

System memory

512 MB DDR3L

FLASH

16 MB NOR FLASH + 128 MB NAND FLASH

Power specifications

Power input



DC: 42.5 V to 57 V



PoE power supply: in compliance with IEEE

802.3at/bt

Maximum power consumption



DC/802.3bt power supply: 33 W (excluding the output power of the USB port)



802.3at power supply: 25.5 W (The USB function is unavailable. The port rate of 5/2.5GE/PoE_IN decreases to 2.5 Gbit/s. The IoT card power is lower than 0.5 W.)

NOTE

The actual maximum power consumption depends on local laws and regulations.

Environment

Operating



-60 m to +1800 m: -10°C to +50°C

1.3 Basic Specifications

Table 1-4 provides basic specifications of the AP7052DN and AP7152DN.

Table 1-4 Basic specifications

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Item

Description

specifications

temperature



1800 m to 5000 m: Temperature decreases by 1°C every time the altitude increases 300 m.

Storage temperature

-40°C to +70°C

Operating humidity

5% to 95% (non-condensing) IP rating

IP41

Atmospheric pressure

53 kPa to 106 kPa

Part Number

Description

02351KDV

AP7052DN Mainframe(11ac Wave2,Indoor,4X4 Dual-Band,IoT Expansion,Built-in Antenna)

02351KEA

AP7052DN-USA Mainframe(11ac Wave2,Indoor,4X4 Dual-Band,IoT Expansion,Built-in Antenna,United States dedicated)

1.4 Ordering Information

To place an order, contact technical support personnel.

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About This Chapter

2.1 Preparing for Installation

2.2 Installation Flowchart

2.3 Unpacking the Equipment

2 AP Installation

2.4 Determining the Installation Position

2.5 Installing an IoT Card

2.6 Installing the AP

2.7 Cable Connection

2.8 Connecting the Security Lock

2.9 Checking the Device After Installation

2.10 Powering on the AP

2.1 Preparing for Installation

This section describes safety precautions and tool preparations for AP installation.

Safety Precautions



Take proper measures to prevent injuries and device damage.



Place the device in a dry and flat position away from any liquid and prevent the device from slipping.



Keep the device clean.



Do not put the device and tools in the aisles.

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Only the qualified personnel are permitted to install and remove the device and its accessories.

Phillips screwdriver

Protective gloves

ESD gloves

Slip-proof glove

Marker

Hammer drill Claw hammer

Diagonal pliers

Wire stripper

RJ45 crimping tool

Cable cutter

Network cable tester

Jig saw

Multimeter

Ladder

Safety helmet

Safety belt

Anti-skid shoes

Before installation and operation, read the safety precautions carefully.

Tool Preparation

To install APs, prepare tools listed in Table 2-1.

Table 2-1 Tools

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2.2 Installation Flowchart

The following figure shows the process for installing an AP.

Figure 2-1 Installation flowchart

2.3 Unpacking the Equipment

Before unpacking the carton, ensure that the packing carton is intact and not damaged or soaked. Stop unpacking if the equipment is rusted or soggy. Then, investigate causes and contact the supplier.

After unpacking, check items in the carton against the packing list. If any item is missing, contact the supplier or agent.

Usually, the packing list contains the following items.



AP device

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

Sheet metal mounting bracket



Screws



Adjustable buckle



Expansion screws



Quick start guide



Warranty card



MAC address label



SN label

If a PoE adapter or a DC power adapter is required, you need to purchase it separately. For DC power adapter models, see 5.9 Power Adaptation Solution.

2.4 Determining the Installation Position

Indoor APs are usually mounted on a wall or ceiling using sheet metal mounting brackets. The installation position is determined by the site survey. There must be at least 200 mm clearance between the cabling end of the AP and the wall. Figure 2-2 shows space requirements.

Figure 2-2 Mounting an AP

When determining the AP installation position, comply with the following rules:



Try to reduce the number of obstacles, such as walls, between the AP and user terminals.

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

Scenario

Deployment Distance Requirement

Indoor installation



There should be at least a 7 m distance between antennas.



The antennas should be placed at least 2 m from the 4G antennas of the carrier.



The antennas should be placed far away from electronic devices that may produce interference, such as microwave ovens.

Place the AP far away from electronic devices that may produce radio interference, such as microwave ovens, other APs, antennas, and other radio communication devices. For details, see Table 2-2.



Install the AP in a hidden position that does not affect daily lives and work of residents.



Install the AP in a site that is free from leaking or dripping water, heavy dew, and humidity, and take protective measures to prevent water from flowing into the equipment along the cable.



Do not install the AP in an environment with high temperature, dust, poisonous gases, flammable or explosive objects, electromagnetic interference (from a radar station, radio station, or substation), unstable voltage, violent shakes, or strong noise.

Table 2-2 General anti-interference requirements

If antennas are embedded into APs, the deployment distance requirements on the antennas are those on APs.

2.5 Installing an IoT Card

The AP provides an IoT slot for installing an ANT or RFID card based on customer requirements.

1. Hold the buckle on the bottom cover of the AP, and remove the cover and plastic plugs.

The number of rubber plugs to be removed depends on the number of radio cables.

Use a flat-head screwdriver to remove the cover. Insert the flat-head screwdriver under the cover buckle and lever the buckle.

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1. AP

2. IoT card

3. M2.5x6 screws

2. Place an IoT card in the slot and tighten the card using M2.5x6 screws (with a tightening

torque of 0.3 Nm).

3. Connect an IoT antenna with the MMCX connector of an IoT card, and slide the IoT

card cover to secure the IoT card. When installing the IoT card cover, insert the protrusion on the cover into the opening on the AP. Then press the protrusion until you hear a click sound.



The diagonal size of a hexagon SMA connector must be less than or equal to 8 mm; otherwise, the cable cannot be installed.



The ANT card has one radio port, and the RFID card has two.

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2.6 Installing the AP

2.6.1 Installing the Device on a Wall

A wall for installing the device needs to meet the following requirements:



The wall can bear the weight of four times the total weight of the device and mounting bracket without damage.



When the tightening torx of a screw reaches 5 N•m, the screw still properly works, without crack or

damage on the wall.

Mounting kits and expansion bolts are required to install the AP on a wall. The procedures are as follows:

When fixing the sheet metal mounting bracket, ensure that the arrows point upwards on the

label.

1. Fix a mounting bracket to the wall against the wall and mark the drilling positions

through holes of the bracket.

2. Use a 6 mm drill bit to drill 25 mm to 30 mm deep holes in the drilling positions.

Hammer the expansion tubes into the holes until the expansion tubes are completely embedded into the wall.

3. Fix the mounting bracket to the wall and use the Phillips screwdriver to fasten three

expansion screws into the expansion tubes.

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4. Connect the cables. For details, see 2.7 Cable Connection.

5. Align the rubber feet of the device over the mounting slots on the mounting bracket and

vertically push the AP to secure it. When the spring clip is popped up, push the AP downward until it snaps into place (you can hear a click).

In a scenario with heavy vibrations, tighten the AP to the mounting bracket using M4x30 screws with a

torque of 1.4N•m. This prevents the AP falling off from due to vibrations. In normal scenarios, you do

not need to install these screws.

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2.6.2 Installing the Device on a Ceiling

1. Ceiling tile

2. Adjustable buckle

3. M4x30 screw

A ceiling needs to bear the weight of four times the total weight of the device and mounting bracket without damage.

1. Remove a ceiling tile, determine locations of mounting holes based on the distance

between two installation holes on the mounting bracket, use a hammer drill to drill holes on the ceiling tile, and fix the mounting bracket to the ceiling tile(with a tightening torque of 1.4 N•m).

The screws provided for ceiling-mounting of APs are 30 mm long and can be used to fix an AP on a ceiling no thicker than 15 mm. To install APs on thicker ceilings, you need to purchase longer screws.

2. Connect the cables. For details, see 2.7 Cable Connection.

3. Align the rubber feet of the device over the mounting slots on the mounting bracket and

vertically push the AP to secure it. When the spring clip is popped up, push the AP horizontally until it snaps into place (you can hear a click).



Ensure that the AP is correctly installed on the mounting bracket and there is 200 mm space above and around the AP for maintenance.



In a scenario with heavy vibrations, tighten the AP to the mounting bracket using M4x30 screws with a torque of 1.4N•m. This prevents the AP falling off from due to vibrations. In normal scenarios, you do not need to install these screws.

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2.6.3 Installing the Device on a T-rail

1. T-rail

2. M4x30 Screw

3. Adjustable buckle

4. Sheet metal mounting bracket

A T-rail needs to bear the weight of four times the total weight of the device and mounting bracket without damage. Figure 2-3 shows the T-rail dimensions requirements (t: thickness; w: width).

Figure 2-3 Section of a T-rail

1. Remove two ceiling tiles around the T-rail, use screws to fix the adjustable buckle to the

mounting bracket, hook the adjustable buckle to the T-rail, and secure the screw on the adjustable buckle to fasten the mounting bracket and T-rail.

2. Connect the cables. For details, see 2.7 Cable Connection.

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3. Align the rubber feet of the device over the mounting slots on the mounting bracket and

vertically push the AP to secure it. When the spring clip is popped up, push the AP horizontally until it snaps into place (you can hear a click).



Before fixing the adjustable buckle with a screw, adjust the buckle to a proper position based on the T-rail width.



Ensure that the AP is correctly installed on the mounting bracket and there is 200 mm space above and around the AP for maintenance.



In a scenario with heavy vibrations, tighten the AP to the mounting bracket using M4x30 screws

with a torque of 1.4N•m. This prevents the AP falling off from due to vibrations. In normal scenarios,

you do not need to install these screws.

2.6.4 Installing an AP into a Ceiling

An AP can be installed in a removable or irremovable ceiling. For details, see Installing an AP

in a Removable Ceiling and Installing an AP in an Irremovable Ceiling.



This mode is not applicable to the AP with external antennas (including IoT card antennas and AP antennas).



You need to purchase a plastic enclosure, mounting bracket, and other accessories separately. The part number is 21242880.



A ceiling needs to bear the weight of four times the total weight of the device and mounting bracket without damage.



The screws provided for ceiling-mounting of APs are 30 mm long and can be used to fix an AP on a ceiling no thicker than 15 mm. To install APs on thicker ceilings, you need to purchase longer screws.

Installing an AP in a Removable Ceiling

1. Remove a ceiling tile, draw the AP mounting position on the ceiling tile using an

opening mold, and cut an opening.

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1. Ceiling tile

2. Clamp 1

3. Mounting bracket

4. M4x30 screws

2. Use M4x30 screws to tighten the mounting bracket, ceiling tile, and clamp 1 to the

ceiling tile (with a tightening torque of 1.2 Nm).

3. Install the ceiling tile. For details, see Connect the cables. For details, see 2.7 Cable

Connection.

4. Align the rubber feet of the device over the mounting slots on the mounting bracket and

vertically push the AP to secure it. When the spring clip is popped up, push the AP horizontally until it snaps into place (you can hear a click).

Ensure that the AP's network interfaces point to the same direction as the spring clip of the mounting bracket. Otherwise, installation cannot continue.

5. Install the plastic enclosure. Ensure that the clamping hook of the enclosure points to the

same direction as the AP's network interfaces. Push the enclosure vertically until the enclosure surface is aligned with that of the AP (you can hear a click).

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Installing an AP in an Irremovable Ceiling

1. Ceiling tile

2. Clamp 1

3. Clamp 2

4. M4x30 screws

1. Draw the AP mounting position on the ceiling tile using an opening mold and cut an

opening.

2. Use clamp 1 to align with the dent of the opening on the ceiling tile and mark the two

holes in the middle of clamp 1. Drill two holes with a diameter of 5 mm on both sides of the opening on the ceiling tile. Use four M4x30 screws to tighten clamps 1 and 2 to the ceiling tile (with a tightening torque of 1.2 Nm).

3. Install the mounting bracket, cables, AP, and enclosure. For details, see steps 2, 3, 4, and

5 in Installing an AP in a Removable Ceiling.

2.6.5 Removing an AP

Flip the spring clip on the mounting bracket and slip the AP towards the spring clip. Release the spring clip until the rubber feet of the AP enter the mounting keyholes. Remove the AP from the mounting bracket.

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Figure 2-4 Removing an AP

Model

Appearance

AP7052 DN



If a captive screw is installed, remove the screw and then follow the preceding steps to uninstall the AP.



An AP is secured to the mounting bracket using a self-locking mechanism. Therefore, before installing an enclosure for an AP, remove all screws. Remove the AP and mounting bracket together from the ceiling, and then remove the AP from the mounting bracket.

2.7 Cable Connection

Table 2-4 describes the cable connections.

Table 2-3 Appearance of the AP

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Table 2-4 Cable connections

No.

Cable or Device

Description

1

USB flash drive or USB cable

Connects to a USB flash drive or other storage devices to extend the storage space of the AP. The USB2.0 standard is supported.

2

Network cable



The service network cable and PoE input cable cannot be connected to the console port. Otherwise, the AP may be damaged when using PoE power supply.



If the AP needs to connect to the Ethernet, ensure that the Ethernet cable is working properly. If the Ethernet cable is not working properly, for example, RJ45 connectors are short-circuited, the AP may fail to be powered on or fail to work. Before connecting an Ethernet cable to the AP, use the cable test tool to check whether the cable is qualified. If the cable is unqualified, replace it.



For the supported network cable types and length requirements, see Connecting Network Cables.

3

DC power adapter

When the AP uses the DC power supply, use a power adapter for power supply; otherwise, the AP may be damaged.

4

RF cable

Connects an antenna to an IoT card through a radio cable.

5

Antenna

Connects a 2.4 GHz or 5 GHz antenna to the AP to send and receive wireless signals.The port type is N-type female.The port is applicable only to an AP that supports external antennas.

6

Antenna

Connects a 5 GHz antenna to the AP to send and receive wireless signals.The port type is N-type female.The port is applicable only to an AP that supports external antennas.



No priorities are distinguished for DC and PoE power supply modes, DC and GE/PoE_IN support HSB.



Two PoE channels have no priority and can serve as HSB for each other when they have the same input power type.

When installing a cable, you must make a drip loop to prevent water from flowing into devices along the cable. For the method of making the drip loop, see 5.8 Guide to Making Drip Loops.

Pay attention to the following points when bundling the cables:



Different types of cables must be separately routed with the minimum spacing of 30 mm and cannot be entangled or crossed. Cables should be parallel or separated using dedicated separators.



Bundled cables are closely arranged, straight, tidy, and undamaged.

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

Interface Rate

Network Cable Type

Maximum Transmission Distance

GE

CAT5e or higher

100 m

2.5GE

CAT5e or higher unshielded twisted pair (UTP)

100 m

CAT5e or higher shielded twisted pair (STP)

200 m When the transmission

distance is greater than 100 m, this network cable can only be used to connect the following switches:



S6720-52X-PWH-SI-AC F



S6720-52X-PWH-SI



S6720-56C-PWH-SI-AC



S6720-56C-PWH-SI



S6320-32C-PWH-SI



S6720-32C-SI-AC



S6720-32C-SI-DC



S6720-32C-PWH-SI-AC



S6720-32C-PWH-SI

5GE

CAT5e UTP



100 m (Only the first 30 m of cables is bundled in 6-a-1 mode.)



55 m (All cables are bundled.)



100 m (Each cable is bundled separately.)

CAT5e STP

100 m

CAT6 or higher

100 m

Cable ties are bound neatly facing the same direction, and those at the same horizontal line must be in a straight line. Cable tie tails should be cut smoothly and evenly.



Labels or nameplates must be attached to the cables after they are installed.

Connecting Network Cables

Table 2-5 Network cable types supported by Ethernet interfaces and maximum transmission distances



6-a-1 stands for the six-around-one cable bundle mode, with one cable in the center and six cables bundled evenly around it.

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

Connecting UTP network cables to 5GE interfaces poses high risks and is not recommended. The causes are as follows:



802.3bz requires that the ALSNR value for alien crosstalk between network cables be greater than 0, but the standards for Cat5e and Cat6 unshielded twisted pairs do not specify the required ALSNR value. Therefore, such cables may not meet the crosstalk requirement in 802.3bz, causing severe problems such as continuous packet loss.



According the cabling specification TIA TSB-5021, using Cat5e and Cat6 cables for 5G poses high risks.



Currently, no clear onsite testing or evaluation method is available for checking whether ALSNR of cables conforms to 802.3bz.



If Cat5e and Cat6 unshielded twisted pairs do not meet the 5G requirement, you are advised to replace them with shielded twisted pairs or reduce the rate of interfaces to 2.5G.

Connecting Antennas

Connect the antennas delivered in the installation accessory package of the AP to the 2.4G/5G

RF ports on the AP, tighten the nuts (with a torque of 0.8 N•m), and adjust antenna angles as

required.

Do not connect the antennas delivered in the installation accessory package of the AP to 5G antenna interfaces. Otherwise, the AP and antennas may be damaged. The 5G antenna interfaces can be connected only to remote antennas through feeder cables.

2.8 Connecting the Security Lock

There is a security slot on the device. You can lock the device to an immovable object to prevent theft. The detailed procedures are as follows:

1. Fasten the cable of the security lock to an immovable object around.

2. Insert the security lock into the security slot and lock it.

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No.

Check Item

1

The device is installed by strictly following the design draft. The installation position meets space requirements, with maintenance space reserved.

2

The device is securely installed.

3

The power cables are intact and not spliced.

4

Terminals of the power cables are welded or cramped firmly.

5

All power cables are not short-circuited or reversely connected and must be intact with no damage.

You need to purchase the security lock separately.

2.9 Checking the Device After Installation

Table 2-6 shows the items to be checked after installation is complete. For more details, see

Installation Checklist in the appendix.

Table 2-6 Installation checklist

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No.

Check Item

6

The power cables and ground cables are separated from other cables and bundled separately.

7

Connectors of signal cables are complete, intact, and tightly connected. The signal cables are not damaged or broken.

8

Labels on cables are clear and correct.

2.10 Powering on the AP

After the AP is powered on, observe the indicator on the AP to check the system running status. For details, see 1.2 Indicator Description.

Do not frequently power on and off the device.

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About This Chapter

Parameter

Default Setting

User name

admin

Password

admin@huawei.com

3.1 Logging In to the Device Using STelnet/Telnet

3.2 Logging In to the Device Through the Web System

3.3 Logging In to the Device Through the Console Port

3 Logging In to the Device

3.1 Logging In to the Device Using STelnet/Telnet

You can log in to the device using STelnet V2 or Telnet to configure, manage, and maintain the device in the CLI.



By default, only the STelnet V2 service is enabled on the device.



Telnet has security vulnerabilities. You are not advised to enable the Telnet service.

Device connections are classified into wired and wireless connections.



In versions earlier than V200R007C20, APs support wired connections.



In V200R007C20 and later, Fat APs support both wired and wireless connections, and Fit APs and cloud APs support wired connections.

Before logging in to the device, complete the following tasks:



Power on the device.



Prepare network cables used to connect device interfaces for wired connections. No network cable is required for wireless connections.

The following table lists the default configuration of the device. You are advised to change the default user name and password on your first login.

Table 3-1 Default configuration of the device

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Parameter

Default Setting

IP address



Wired connection: 169.254.1.1



Wireless connection: 192.168.1.1

Subnet mask



Wired connection: 255.255.0.0



Wireless connection: 255.255.255.0

SSID

HUAWEI-XXXX, applicable to wireless connections of Fat APs (XXXX specifies the last four bits of the AP's MAC address.)

Wireless password

None, applicable to wireless connections of Fat APs

For a Fit AP and cloud AP, you can perform the following operations:



If the Fit AP is already online on the AC, you can remotely log in to the AC on a local terminal and run the display ap all command to check the IP address of the device.



If the Fit AP in any version is offline or the Fit AP in V200R007C10 or later does not go online, you can access the device through the offline management VAP for operations. By default, the SSID of the offline management VAP is hw_manage_xxxx (xxxx specifies the last four bits of the AP's MAC address) and the password is hw_manage. After the IP address of the PC is set to 169.254.2.x/24 (169.254.2.1 excluded and 169.254.2.100 recommended), the connection is set up, you can log in to the AP using STelnet for operations.



If the cloud AP is offline or does not go online, you can access the device through the offline management VAP for operations. By default, the SSID of the offline management VAP is

hw_manage_xxxx (xxxx specifies the last four bits of the AP's MAC address) and the password is hw_manage. After the PC dynamically obtains an IP address and connects to the AP, you can log in

to the AP using STelnet for operations.

The following example uses the default parameters and is used for reference only.

Wired Connection Mode

Step 1 Use a network cable to connect a PC to any network port of the AP or that of the switch on

the same network segment as the AP.

Step 2 Assign the PC with an IP address on the same network segment as the default IP address of

the device so that the PC and device are reachable to each other. If the device uses the default settings, the IP address of the PC must be in the network

segment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended.

Step 3 Start the CLI on the PC and access the IP address 169.254.1.1 of the device using STelnet V2. Step 4 Enter the user name and password as prompted to log in to the user interface.

----End

Wireless Connection Mode

Step 1 By default, STAs search for the WLAN HUAWEI-XXXX within the wireless signal coverage

of a Fat AP. STAs can access the WLAN without entering the password. If the SSID and

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password have been configured, use the specified SSID and password to set up a wireless connection.

Step 2 Start the CLI on the STA and access the IP address 192.168.1.1 of the device using STelnet

V2.

Step 3 Enter the user name and password as prompted to log in to the user interface.

----End

Method of Obtaining Upgrade and Configuration Documentation

To perform subsequent upgrades and configurations after login to the device, visit Huawei enterprise technical support website http://support.huawei.com/enterprise and search for product documentation by keyword. The search method is described as follows:



Fit AP:

− Upgrade: Search for Fit AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Configuration: Search for AC6605 product documentation, and refer to the

configuration guide in the documentation of the correct version.



Fat AP:

− Upgrade: Search for Fat AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Configuration: Search for Fat AP product documentation, and refer to the

configuration guide in the documentation of the correct version.



cloud AP:

− Upgrade: Search for cloud AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Online configuration: Search for cloud AP product documentation, and refer to

the configuration guide in the documentation of the correct version.

− Service configuration after APs go online: Search for CloudCampus solution

product documentation, and refer to the deployment guide in the documentation

of the correct version.

3.2 Logging In to the Device Through the Web System

The built-in web system allows you to use a browser to log in to the device. You can configure, manage, and maintain a Fat AP and cloud AP on the GUI. On the web page, you are prompted to configure and manage a Fit AP on the AC.

Device connections are classified into wired and wireless connections.



In versions earlier than V200R007C20, APs support wired connections.



In V200R007C20 and later, Fat APs support both wired and wireless connections, and Fit APs and cloud APs support wired connections.

Before logging in to the device, complete the following tasks:



Power on the device.



Prepare network cables used to connect device interfaces for wired connections. No network cable is required for wireless connections.

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The following table lists the default configuration of the device. You are advised to change the

Parameter

Default Setting

User name

admin

Password

admin@huawei.com

IP address



Wired connection: 169.254.1.1



Wireless connection: 192.168.1.1

Subnet mask



Wired connection: 255.255.0.0



Wireless connection: 255.255.255.0

SSID

HUAWEI-XXXX, applicable to wireless connections of Fat APs (XXXX specifies the last four bits of the AP's MAC address.)

Wireless password

None, applicable to wireless connections of Fat APs

default user name and password on your first login.

Table 3-2 Default configuration of the device

For a Fit AP and cloud AP, you can perform the following operations:



If the Fit AP in any version is offline or the Fit AP in V200R007C10 or later does not go online, you can access the device through the offline management VAP for operations. By default, the SSID of the offline management VAP is hw_manage_xxxx (xxxx specifies the last four bits of the AP's MAC address) and the password is hw_manage. After the IP address of the PC is set to 169.254.2.x/24 (169.254.2.1 excluded and 169.254.2.100 recommended), the connection is set up, , and you can log in to the AP using web system for operations.



If the cloud AP is offline or does not go online, you can access the device through the offline management VAP for operations. By default, the SSID of the offline management VAP is

hw_manage_xxxx (xxxx specifies the last four bits of the AP's MAC address) and the password is hw_manage. After the PC dynamically obtains an IP address and connects to the AP, you can log in

to the AP using web system for operations.

The following example uses the default parameters and is used for reference only.

Wired Connection Mode

Step 1 Use a network cable to connect a PC to any network port of the AP or that of the switch on

the same network segment as the AP.

Step 2 Assign the PC with an IP address on the same network segment as the default IP address of

the device so that the PC and device are reachable to each other. If the device uses the default settings, the IP address of the PC must be in the network

segment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended.

Step 3 Open the browser on the PC, enter http://IP address in the address box, and press Enter to

log in. Select a language for the web system, enter the default user name and password, and click Login to enter the web system home page.

----End

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Wireless Connection Mode

Step 1 By default, STAs search for the WLAN HUAWEI-XXXX within the wireless signal coverage

of a Fat AP. STAs can access the WLAN without entering the password. If the SSID and password have been configured, use the specified SSID and password to set up a wireless connection.

Step 2 Open the browser on the STA, enter http://IP address in the address box, and press Enter to

log in. Select a language for the web system, enter the default user name and password, and click Login. The web system home page is displayed.

----End

Method of Obtaining Upgrade and Configuration Documentation

To perform subsequent upgrades and configurations after login to the device, visit Huawei enterprise technical support website http://support.huawei.com/enterprise and search for product documentation by keyword. The search method is described as follows:



Fit AP:

− Upgrade: Search for Fit AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Configuration: Search for AC6605 product documentation, and refer to the

configuration guide in the documentation of the correct version.



Fat AP:

− Upgrade: Search for Fat AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Configuration: Search for Fat AP product documentation, and refer to the

configuration guide in the documentation of the correct version.



cloud AP:

− Upgrade: Search for cloud AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Online configuration: Search for cloud AP product documentation, and refer to

the configuration guide in the documentation of the correct version.

− Service configuration after APs go online: Search for CloudCampus solution

product documentation, and refer to the deployment guide in the documentation

of the correct version.

3.3 Logging In to the Device Through the Console Port

Before logging in to the device, complete the following tasks:



Power on the device.



Prepare a console cable.



Prepare terminal simulation software.

If your PC's operating system provides terminal simulation software (like HyperTerminal in Windows 2000/XP), you do not need to install additional terminal simulation software. If the PC runs on an operating system without terminal simulation software (like Windows 7), install third-party terminal simulation software on the PC by referring to the user manual or online help.

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Step 1 Use a console cable to connect the PC to the console port of the device. Step 2 Start terminal emulation software on the PC, create a connection, and set communication

parameters as follows:



Baud rate (B): 9600



Data bits (D): 8



Parity (P): None



Stop bits (S): 1



Flow control (F): None

Step 3 Press Enter and enter the authentication information as prompted to log in to the user view.

(The following information is only for reference.) For a Fit AP, enter the default user name admin and password admin@huawei.com. You are advised to change the default user name and password on your first login.

Login authentication

Username: admin

Password:

Info: You are advised to change the password to ensure security.

For a Fat AP and Cloud AP, set a passowrd of console, and use the password to log in.

Please configure the login password:

Info: A plain text password is a string of 8 to 16 case-sensitive characters and must

be a combination of at least two of the follow

ing: uppercase letters A to Z, lowercase letters a to z, digits, and special characters.

A cipher text password contains 56 or 68 ch

aracters.

Enter password:

Confirm password:

----End

Method of Obtaining Upgrade and Configuration Documentation

To perform subsequent upgrades and configurations after login to the device, visit Huawei enterprise technical support website http://support.huawei.com/enterprise and search for product documentation by keyword. The search method is described as follows:



Fit AP:

− Upgrade: Search for Fit AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Configuration: Search for AC6605 product documentation, and refer to the

configuration guide in the documentation of the correct version.



Fat AP:

− Upgrade: Search for Fat AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Configuration: Search for Fat AP product documentation, and refer to the

configuration guide in the documentation of the correct version.



cloud AP:

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− Upgrade: Search for cloud AP upgrade guide, and refer to the upgrade guide in the

documentation of the correct version.

− Online configuration: Search for cloud AP product documentation, and refer to

the configuration guide in the documentation of the correct version.

− Service configuration after APs go online: Search for CloudCampus solution

product documentation, and refer to the deployment guide in the documentation

of the correct version.

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About This Chapter

Power Supply Mode

Possible Cause

Power supply using a power module



The device is powered off.



The power cable is not securely connected to the device.



The power supply unit has failed.

− If the device connects to an external

power source, its power adapter may fail.

− If the device has a built-in power

supply, the device itself may be faulty.

PoE power supply



The power sourcing equipment does not support the PoE function or is faulty.



The power sourcing equipment does not support the required power supply mode.



The power sourcing equipment does not provide sufficient power.



The power sourcing equipment is incorrectly configured (the PoE function

This section describes common methods for troubleshooting typical hardware faults.

4.1 A Device Fails to Be Powered On

4 Hardware Failures

4.1 A Device Fails to Be Powered On

Fault Description

The indicator of a device is off.

Possible Causes

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Power Supply Mode

Possible Cause

is disabled or the power-off time range is improperly set).



The line is faulty (the network cable or distribution frame is damaged).



The device is faulty.

Power Supply Mode

Troubleshooting Procedure

Power supply using a power module

1. Check whether the device is powered

off.

2. Check that the power cable is securely

connected to the device.

3. Check whether the power supply is

normal. Replace the power adapter with a normal

one. If the device is powered on, the original power adapter is faulty. Contact technical support personnel or Huawei agent and ask them to replace the power adapter.

4. If the device still cannot be powered on,

the device itself is faulty. Contact technical support personnel or Huawei agent and ask them to replace the device.

PoE power supply

1. Check whether the power sourcing

equipment supports PoE or is faulty.

2. Check whether the power output mode

of the power sourcing equipment is supported by the powered device.

3. Check whether the power sourcing

equipment can support the maximum power consumption of the device.

4. Check whether the configuration on the

power sourcing equipment causes PoE power supply errors, such as the PoE function is disabled or the power-off time range is incorrectly set.

5. Check whether the network cable or

distribution frame is faulty.

6. If the device still cannot be powered on,

the device itself is faulty. Contact technical support personnel or Huawei agent and ask them to replace the device.

Troubleshooting Procedure

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The output power of an 802.3af PSE port is 15.4 W, that of an 802.3at PSE port is 30 W, and that of an

802.3bt PSE port is 60 W.

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About This Chapter

5.1 On-site Cable Assembly and Installation

5.2 Environmental Requirements for Device Operation

5.3 Equipment Grounding Specifications

5 Appendix

5.4 Engineering Labels for Cables

5.5 Guide to Using Optical Modules

5.6 Fault Tag

5.7 Installation Checklist

5.8 Guide to Making Drip Loops

5.9 Power Adaptation Solution

5.1 On-site Cable Assembly and Installation

5.1.1 Cable Assembly Precautions

Checking the Appearance of Cables



If the cable jacket or insulation is visibly dirty, clean it before assembly.



If the jacket or insulation of a cable has visible damage, irreparable scuffing, or other defects, do not use the cable.



If the shield layer of a cable is damaged, do not use the cable.



If the cable jacket or insulation cracks after the cable is bent or twisted, discard this cable and check whether other cables have the same problem. If other cables have the same problem, replace these cables.

Checking the Appearance of Connectors



Do not use connectors with visible defects, damage, rust or scuffing.

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

Do not use connectors if their shells or pins have exposed part or uneven plating, or their pins are lost, broken, or bent.



Do not use connectors that have dirt on their pins or in their jacks or if there are conductors between pins or between pins and the shell.

Precautions for Assembly



Use dedicated tools or tools delivered by Huawei and follow the methods given here during assembly.



Hold terminals of cables instead of pulling the cables themselves when installing or removing cable components.



Take the following precautions when cutting or stripping cables:

− Make cables slightly longer than necessary.

− Coil cables longer than 2 m (6.56 ft) after cutting. Bind and fasten the coils using

bundling ropes. The inner diameters of the coils should be larger than 20 times the outer diameters of the cables.

− When stripping the jackets of cables, avoid damaging the shield layers (braid or

aluminum foil), insulation, core conductors, and other jackets that do not need to be stripped.

− After assembling cables, cut all visible cross sections of jackets to ensure that the

cross sections are arranged neatly.

− Do not touch the core conductors of cables with your hands. Terminate exposed

conductors in a timely way after stripping off insulation so that the surface of the conductors does not become oxidized.



Take the following precautions when crimping and connecting cables or connectors:

− The terminals and conductors should be connected tightly after they are crimped.

They should not be moved or turned.

− Cut all the exposed copper wires.

− Try to avoid a second crimping of sleeves.

− Keep all the conductors clean and aligned.

The connectors, cables, and tools provided by different vendors may be different. The figures in this document are for your reference only.

5.1.2 Assembling Power Cables

5.1.2.1 Assembling a DC 2-Pin Round Connector (A)

Context

Figure 5-1 shows the components of DC 2-PIN round connector A.

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1. Enclosure

2. Shield circle

3. Clip

4. Socket

5. Nut

Procedure

Step 1 Bind a cable tie, separate the socket and nut, and install them on the cable, as shown in Figure

Figure 5-1 Components of DC 2-pin round connector A

5-2.

Figure 5-2 Installing the nut on the cable

Step 2 Strip the cable as shown in Figure 5-3.

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Figure 5-3 Stripping the cable

Step 3 Open the clip and correctly insert the core wires to the negative and positive holes, as shown

in Figure 5-4.

Figure 5-4 Inserting core wires

Step 4 Use a Phillips screwdriver to tighten the crimping screw in "+" hole, rotate the connector by

180 degree, and tighten the crimping screw in "-" hole, as shown in Figure 5-5.

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Figure 5-5 Tightening the crimping screws

Step 5 Close the clip and tighten the screw to compact the shield layer, as shown in Figure 5-6.

Figure 5-6 Compacting the shield layer

Step 6 Pre-tighten the socket and enclosure and use the Phillips screwdriver to tighten the socket

with the tightening torque no less than 1.2 N•m, as shown in Figure 5-7.

Figure 5-7 Tightening the socket

Step 7 Pre-tighten the socket and nut and use the Phillips screwdriver to tighten the nut with the

tightening torque no less than 1.2 N•m, as shown in Figure 5-8.

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Figure 5-8 Tightening the nut

Step 8 Use a multimeter to check the connectivity of the 2-pin round connector's cable components,

as shown in Figure 5-9.

Figure 5-9 Checking connectivity

The connectivity meets standards if the following conditions are met:



Positive and negative holes of the connector are not short-circuited.



The metal enclosure and connector's holes are not short-circuited.



The cable shield layer is properly connected to the metal enclosure.



Core wires are properly connected to the connector's holes.

Step 9 If devices are installed outdoor, wrap three layers of PVC insulation tape around the

connector for protection, as shown in Figure 5-10.

Ensure that proper quantity of the PVC insulation tape is used for wrapping the connector, facilitating the connector uninstallation in later maintenance.

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Figure 5-10 Wrapping PVC insulation tape

AAU Side

Cable

Commonly-Used Colors

Colors Used in Britain

DC round waterproof connector

RTN (+)

Black or brown

Blue

NEG (-)

Blue

Gray

----End

5.1.2.2 Assembling a DC 2-Pin Round Connector (B)

This topic describes how to assemble a DC 2-pin round connector (B) and key operations.

Context

Table 5-1 lists power cables connected to the active antenna unit (AAU).

Table 5-1 AAU power cable

The color and appearance of cables in this topic are for reference only. The cable color and appearance vary depending on countries and regions.

Figure 5-11 shows components of the DC round waterproof connector.

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1. Enclosure

2. Socket

3-1. Clamping jaw 1

3-2. Clamping jaw 2

4. Nut

Procedure

1. Clamping jaw 1

2. Clamping jaw 2

Step 1 Determine the diameter of the cable to be installed. If the diameter is larger than 14 mm,

Figure 5-11 Components of the DC round waterproof connector

replace the clamping jaw, as shown in Figure 5-12. During the replacement, connect the clamping jaw boss to the groove inside the socket and ensure that the clamping jaw is completely installed in the socket, as shown in Figure 5-13.



Power cables supported by clamping jaw 1: 2 x 12 AWG, 2 x 4 mm2, and 2 x 6 mm2



Power cables supported by clamping jaw 2: 2 x 8 AWG and 2 x 10 mm2

Figure 5-12 Replacing clamping jaws

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Figure 5-13 Correct operation for replacing a clamping jaw

1. Groove

2. Boss

1. Cable

2. Plastic cable tie

Step 2 Reserve the cable length at the assembly end, bind the plastic cable tie, install the nut,

clamping jaw, and socket on the cable and pre-tighten them, as shown in Figure 5-14.

Figure 5-14 Pre-tightening

Step 3 Use the stripping ruler card to measure required lengths, strip the outer jacket (48 mm) on the

head of the cable to be connected and the outer jacket (17 mm) of each core wire, twist the shield layers into one strand, as shown in Figure 5-15.

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1. Shield layer



The stripping ruler card is delivered with the components of the connector.



Cut the padding using diagonal pliers.



Gently strip the insulation sheath to avoid damage to the conductor metal.



Ensure that the edge of core wires is not split.

Figure 5-15 Stripping the cable

Step 4 Connect the cable NEG (-) (gray in Britain and blue in other countries) to - end of the

connector and cable RTN (+) (blue in Britain and black/brown in other countries) to + end of the connector. Tighten two crimping screws using the Phillips screwdriver and compact the cable with tightening torque 1.4 N•m, as shown in Figure 5-16.

Figure 5-16 Tightening the crimping screws

Step 5 After the cables are assembled, pull the cables slightly to check whether the connections are

secure. If the cable slides outward or the wire of the cable is exposed outside the hole for the

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cable, remove the cable, cut the split wires, and then strip the jacket and install the cable

1. Shield layer

again.

Step 6 Twist the shield layers into one strand and insert it into the shield slot, tighten the tail screw,

and fasten the shielded layer with tightening torque 1.4 N•m, as shown in Figure 5-17.

Figure 5-17 Compacting the shield layer

Cut the extra shield layer using the diagonal pliers.

Step 7 Tighten the socket and enclosure until the red line on the socket is invisible, as shown in

Figure 5-18.

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Figure 5-18 Tightening the socket and enclosure

Step 8 Pre-tighten the nut and socket and further tighten the nut using a torque wrench (opening

width: 28 mm), as shown in Figure 5-19.

Figure 5-19 Tightening the nut

Step 9 Use a multimeter to check the reliability of cable components, as shown in Figure 5-20.

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Figure 5-20 Checking reliability



Ensure that the short circuit does not occur between the positive and negative holes of the connector.



Ensure that the short circuit does not occur between the metal enclosure and connector's positive and negative holes.

Step 10 If devices are installed outdoor, wrap three layers of PVC insulation tape around the

connector for protection, as shown in Figure 5-21.

Figure 5-21 Wrapping PVC insulation tape

Ensure that proper quantity of the PVC insulation tape is used for wrapping the connector, facilitating the connector uninstallation in later maintenance.

----End

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5.1.2.3 Assembling the OT Terminal and Power Cable

A. Heat-shrinkable tubing

B. Bare crimping terminal

C. Insulation

D. Conductor

Context

Figure 5-22 shows the components of an OT terminal and a power cable.

Figure 5-22 Components of an OT terminal and a power cable

Procedure

Step 1 Based on the cross-sectional area of the cable conductor, strip a length of insulation coating C

to expose the conductor D of length L1, as shown in Figure 5-23. The recommended values of L1 are listed in Table 5-2.

Figure 5-23 Stripping a power cable (OT terminal)

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Cross-Section al Area of Conductor (mm2(in.2))

Value of L1 (mm(in.))

Cross-Sectional Area of Conductor (mm2(in.2))

Value of L1 (mm(in.))

1 (0.002)

7 (0.28)

10 (0.015)

11 (0.43)

1.5 (0.002)

7 (0.28)

16 (0.025)

13 (0.51)

2.5 (0.004)

7 (0.28)

25 (0.039)

14 (0.55)

4 (0.006)

8 (0.31)

35 (0.054)

16 (0.63)

6 (0.009)

9 (0.35)

50 (0.077)

16 (0.63)



When you strip a power cable, do not damage the conductor of the cable.



If the bare crimping terminal is not provided by Huawei, the value of L1 is 1 mm (0.04 in.) to 2 mm (0.08 in.) greater than the value of L.

Table 5-2 Mapping between the cross-sectional area of the conductor and the value of L1

If you are proficient in assembling OT terminals and power cables, you can obtain the value of L1 by comparing the part to be crimped with the power cable.

Step 2 Put the heat-shrinkable (A) tubing onto the bare crimping terminal, as shown in Figure 5-24.

Figure 5-24 Putting the heat shrink tubing onto the bare crimping terminal

Step 3 Put the OT terminal B onto the exposed conductor, and ensure that the OT terminal is in good

contact with the insulation coating C, as shown in Figure 5-24.

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After the conductor is fed into the OT terminal, the protruding part of the conductor, or L2 in Figure 5-24, must not be longer than 2 mm (0.08 in.).

Step 4 Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure

5-25.

The shapes of crimped parts may vary with the crimping dies.

Figure 5-25 Crimping the joint parts of the bare crimping terminal and the conductor (OT terminal)

Step 5 Push the heat shrink tubing (A) toward the connector until the tube covers the crimped part,

and then use a heat gun to heat the tube, as shown in Figure 5-26.

Figure 5-26 Heating the heat shrink tubing (OT terminal)

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A. JG terminal

B. Heat-shrinkable tubing

C. Insulation layer of a power cable

D. Conductor of a power cable

Stop heating the shrink tubing when the connector is securely locked in the shrink tubing. Do not heat the shrink tubing too long as this may damage the insulation coating.

----End

5.1.2.4 Assembling the JG Terminal and Power Cable

Context

Figure 5-27 shows the components of a JG terminal and a power cable.

Figure 5-27 Components of a JG terminal and a power cable

Procedure

Step 1 Strip a part of the insulation to expose the cable conductor with a length of L, as shown in

Figure 5-28. The recommended values of L are listed in Table 5-3.

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Cross-Sectional Area of Conductor (mm2(in.2))

Value of L (mm(in.))

16 (0.025)

13 (0.51)

25 (0.039)

14 (0.55)

35 (0.054)

16 (0.63)

50 (0.077)

16 (0.63)



When you strip a power cable, do not damage the conductor of the cable.



If the bare crimping terminal is not provided by Huawei, you can adjust the value of L as required.

Figure 5-28 Stripping a power cable (JG terminal)

Table 5-3 Mapping between the cross-sectional area of the conductor and the value of L

Step 2 Put the heat shrink tubing onto the bare crimping terminal, as shown in Figure 5-29.

Figure 5-29 Putting the heat shrink tubing onto the bare crimping terminal

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Step 3 Put the bare crimping terminal onto the exposed conductor, and ensure that the bare crimping

terminal is in good contact with the insulation of the power cable, as shown in Figure 5-29.

Step 4 Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure

5-30.

Figure 5-30 Crimping the joint parts of the bare crimping terminal and the conductor (JG terminal)

Step 5 Push the heat shrink tubing toward the connector until the tube covers the crimped part, and

then use a heat gun to heat the tube, as shown in Figure 5-31.

Figure 5-31 Heating the heat shrink tubing (JG terminal)

----End

5.1.2.5 Assembling the Cord End Terminal and the Power Cable

Context

Figure 5-32 shows the components of a cord end terminal and a power cable.

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A. Cord end terminal

B. Insulation layer of a power cable

C. Conductor of a power cable

Procedure

Cross-Section al Area of Conductor (mm2(in.2))

Value of L1 (mm(in.))

Cross-Sectional Area of Conductor (mm2(in.2))

Value of L1 (mm(in.))

Step 1 Strip a part of the insulation to expose the cable conductor with a length of L1, as shown in

Figure 5-32 Components of a cord end terminal and a power cable

Figure 5-33. The recommended values of L1 are listed in Table 5-4.

When you strip a power cable, do not damage the conductor of the cable.

Figure 5-33 Stripping a power cable (cord end terminal)

Table 5-4 Mapping between the cross-sectional area of the conductor and the value of L1

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Cross-Section al Area of Conductor (mm2(in.2))

Value of L1 (mm(in.))

Cross-Sectional Area of Conductor (mm2(in.2))

Value of L1 (mm(in.))

1 (0.002)

8 (0.31)

10 (0.015)

15 (0.59)

1.5 (0.002)

10 (0.39)

16 (0.025)

15 (0.59)

2.5 (0.004)

10 (0.39)

25 (0.039)

18 (0.71)

4 (0.006)

12 (0.47)

35 (0.054)

19 (0.75)

6 (0.009)

14 (0.55)

50 (0.077)

26 (1.02)

Step 2 Put the cord end terminal onto the conductor, and ensure that the conductor is aligned with the

edge of the cord end terminal, as shown in Figure 5-34.

After the conductor is fed into the cord end terminal, the protruding part of the conductor must not be longer than 1 mm (0.04 in.).

Figure 5-34 Putting the cord end terminal onto the conductor

Step 3 Crimp the joint parts of the cord end terminal and the conductor, as shown in Figure 5-35.

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Figure 5-35 Crimping the cord end terminal and the conductor

Cross-Sectional Area of Tubular Terminal (mm2(in.2))

Maximum Width of Crimped Terminal W1 (mm(in.))

0.25 (0.0004)

1 (0.04)

0.5 (0.0008)

1 (0.04)

1.0 (0.0015)

1.5 (0.06)

1.5 (0.0023)

1.5 (0.06)

2.5 (0.0039)

2.4 (0.09)

4 (0.006)

3.1 (0.12)

6 (0.009)

4 (0.16)

10 (0.015)

5.3 (0.21)

16 (0.025)

6 (0.24)

25 (0.039)

8.7 (0.34)

35 (0.054)

10 (0.39)

Step 4 Check the maximum width of the tubular crimped terminal. The maximum width of a tubular

crimped terminal is listed in Table 5-5.

Table 5-5 Maximum width of a tubular crimped terminal

----End

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5.1.3 Assembling Ethernet Cables

A. Jacket of connector

B. Metal shell of connector

C. Wire holder of connector

D. Plug of connector

E. Jacket of Ethernet cable

F. Shield layer of Ethernet cable

G. Twisted-pair wires

-

5.1.3.1 Assembling the Shielded RJ45 Connector and Ethernet Cable

Context

Figure 5-36 shows the components of an RJ45 connector and a shielded Ethernet cable.

Figure 5-36 Shielded RJ45 connector and cable

Procedure

Step 1 Fit the jacket of the connector onto the Ethernet cable, as shown in Figure 5-37.

Figure 5-37 Fitting the jacket of the connector onto the Ethernet cable

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Step 2 Remove a 30 mm (1.18 in.) long section of the jacket, cut off the nylon twine inside the jacket,

and cut a no more than 5 mm (0.20 in.) cleft in the jacket, as shown in Figure 5-38.



When you remove a section of the jacket, do not damage the shield layer of the twisted-pair cable.



When you remove the shield layer, do not damage the insulation of the twisted-pair cable.

Figure 5-38 Removing the jacket of a twisted-pair cable (unit: mm (in.))

Step 3 Fit the metal shell onto the twisted-pair cable. The shield layer is covered by the metal shell,

as shown in Figure 5-39.

Figure 5-39 Fitting the metal shell onto the twisted-pair cable

Step 4 Fit the metal shell onto the twisted-pair cable until the shield layer is covered completely.

Along the edge of the metal shell, cut off the aluminum foil shield layer and ensure that there is no surplus copper wire. The exposed twisted-pair cable is about 20 mm (0.79 in.) long, as shown in Figure 5-40.

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Figure 5-40 Removing the shield layer of a twisted-pair cable (unit: mm (in.))

C

G

White-Green

Green

White-Orange Orange

Blue White-Blue

White-Brown Brown

Step 5 Lead the four pairs of twisted-pair wires through the wire holder, as shown in Figure 5-41 and

Figure 5-42. Ensure that the colored wires are in the correct location in the cable.

Figure 5-41 Leading wires through the wire holder

Figure 5-42 Cable locations in a wire holder

Step 6 Align the four pairs of cables in the holder, as shown in Figure 5-43. The connections

between the wires and the pins are shown in Figure 5-44 and listed in Table 5-6.

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Figure 5-43 Four pairs of cables on a wire holder

Brown

White-Brown

Green

White-Blue

Blue

White-Green

Orange

White-Orange

Pin 8

Pin 1

Matching Pins of Wires

Wire Color

1

White-Orange

2

Orange

3

White-Green

4

Blue

5

White-Blue

6

Green

7

White-Brown

8

Brown

Figure 5-44 Connections between wires and pins

Table 5-6 Connections between wires and pins (using a straight-through cable as an example)

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Step 7 Cut off the surplus cables along the lower edge of the wire holder, as shown in Figure 5-45.

Figure 5-45 Cutting off surplus cables

Step 8 Put the connector body onto the wire holder and turn the metal shell by 90°, as shown in

Figure 5-46.

Ensure that the wire holder is in good contact with the connector body.

Figure 5-46 Putting the connector body onto the wire holder

Step 9 Push the metal shell toward the connector body until the wire holder and the connector body

are engaged completely. Crimp the connector, as shown in Figure 5-47.

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Figure 5-47 Crimping the connector

Step 10 Push the jacket towards the metal shell until the metal shell is covered. This completes the

assembly of one end of the cable, as shown in Figure 5-48.

Figure 5-48 Pushing the metal shell

Step 11 To complete the assembly of the other end, repeat steps 1 to 10.

----End

5.1.3.2 Assembling an Optimized Shielded RJ45 Connector and SFTP Network Cables

Context

This topic describes how to assemble an optimized shielded RJ45 connector with a Secure File Transfer Protocol (SFTP) straight-through network cable as an example. The connector has a cable support rack but does not have a metal jacket. Such a connector can be used for crimping CAT. 6 network cables.

Figure 5-49 shows the shielded RJ45 connector.

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Figure 5-49 Shielded RJ45 connector

1: Core wires

2: Aluminum foil

3: Braid shield

4: Outer jacket

5: RJ45 connector

6: Load bar

7: Cable support rack

Procedure

Step 1 Strip 20 mm outer jacket off the network cable, peel off the braid shield backward, and cut off

the aluminum foil and protection band, as shown in Figure 5-50.

Ensure that the shielded layer is intact when stripping outer jackets off the network cable. Keep the cable insulation intact when stripping the shielded layer.

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Figure 5-50 Stripping the cable

Step 2 Arrange core wires in the order of colors shown in Figure 5-51 and fix the cable support rack

to the bottom of the core wires.

Figure 5-51 Core wire order

Step 3 Hold the arranged core wires and route them through the load bar, as shown in Figure 5-52.

Table 5-7 shows the mapping between the core wires and pins of the connector.

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Figure 5-52 Routing the core wires through the load bar

Pin ID

Core Wire Color

1

White-orange

2

Orange

3

White-green

4

Blue

5

White-blue

6

Green

7

White-brown

8

Brown

Table 5-7 Mapping between core wires and pins

Step 4 After routing core wires through the load bar, move the load bar to the bottom to connect to

the cable support rack, and neatly cut the edge cables, as shown in Figure 5-53.

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Figure 5-53 Neatly cutting edge cables

Step 5 Insert the load bar into the RJ45 connector, as shown in Figure 5-54.

Figure 5-54 Inserting the load bar into the RJ45 connector

Cables must be inserted into the bottom of the connector, which can be checked on the side or front end face of the connector.

Step 6 Use the crimping tool to crimp the connector, as shown in Figure 5-55. Use cutting pliers to

neatly cut braid shields exposed out of the connector along the load bar, as shown in Figure 5-56.

Figure 5-55 Crimping the connector

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Figure 5-56 Neatly cutting braid shields

Step 7 Repeat Step 1 through Step 6 to assemble the optimized shielded RJ45 connector on the other

end of the network cable.

----End

5.1.3.3 Assembling an Integrated Shielded RJ45 Connector and SFTP Network Cables

Context

This topic describes how to assemble an integrated shielded RJ45 connector with a Secure File Transfer Protocol (SFTP) straight-through network cable as an example. The connector does not have a cable support rack or metal jacket.

Figure 5-57 shows the integrated shielded RJ45 connector.

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Figure 5-57 Shielded RJ45 connector

1: Core wires

2: Aluminum foil

3: Braid shield

4: Outer jacket

5: RJ45 connector

Procedure

Step 1 Strip 20 mm outer jacket off the network cable, peel off the braid shield backward, and cut off

the aluminum foil and protection band, as shown in Figure 5-58.

Ensure that the shielded layer is intact when stripping outer jackets off the network cable. Keep the cable insulation intact when stripping the shielded layer.

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Figure 5-58 Stripping the cable

Pin ID

Core Wire Color

1

White-orange

2

Orange

3

White-green

4

Blue

5

White-blue

Step 2 Arrange the twisted pair wires in the order of colors shown in Table 5-8 and cut the wire ends

neatly with 12 mm core wires left, as shown in Figure 5-59.

Figure 5-59 Core wire order

Table 5-8 Mapping between core wires and pins

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Pin ID

Core Wire Color

6

Green

7

White-brown

8

Brown

Step 3 Route the arranged core wires through the RJ45 connector, as shown in Figure 5-60.

Figure 5-60 Routing core wires through the connector

Step 4 Use the crimping tool to crimp the connector, as shown in Figure 5-61.

Figure 5-61 Crimping the connector

Step 5 Neatly cut braid shields exposed out of the connector along the load bar, as shown in Figure

5-62.

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Figure 5-62 Neatly cutting braid shields

Step 6 Repeat Step 1 through Step 5 to assemble the integrated shielded RJ45 connector on the other

end of the network cable.

----End

5.1.3.4 Assembling a Shielded RJ45 Connector and an FTP Network Cable

Context

This topic describes how to assemble a shielded RJ45 connector and File Transfer Protocol (FTP) network cable and related notes.

Figure 5-64 shows the shielded RJ45 connector.

Figure 5-63 Connector jacket

Figure 5-64 Shielded RJ45 connector

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A: Connector jacket

B: Connector

C: Core wires of the twisted pair

D: Aluminum foil used as the network cable shield

E: Network cable jacket

Procedure

Step 1 Route the network cable through the connector jacket, as shown in Figure 5-66.

Figure 5-65 Cable

Figure 5-66 Routing the network cable through the connector jacket

Step 2 Strip 20 mm outer jacket off the cable and cut off the nylon layer inside the jacket, as shown

in Figure 5-67.

Ensure that the aluminum foil used as a shielded layer is intact when stripping outer jackets off the twisted pair cable.

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Figure 5-67 Stripping the outer jacket

Step 3 Pull outward the shielded aluminum foil and cut off the PET membrane and ground cables

along the end face of the outer jacket, as shown in Figure 5-68.

Figure 5-68 Cutting off the PET membrane and ground cables

Step 4 Arrange the twisted core wires according to color order shown in Figure 5-69. Use cutting

pliers to neatly cut the front end of the twisted pair, as shown in Figure 5-70. Figure 5-71 shows pin arrangement of each contact of the connector.

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Figure 5-69 Mapping between colors and pins

Pin8

Pin1

Figure 5-70 Neatly cutting the twisted pair

Figure 5-71 Pin arrangement of the connector

Step 5 Insert the arranged four twisted pair cables into the connector, as shown in Figure 5-72.

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

Cables must be inserted into the bottom.



The aluminum foil must keep intact after cables are inserted into the connector.

Figure 5-72 Inserting cables into the connector

Step 6 Use the crimping tool dedicated for FTP network cables to crimp the connector and neatly cut

the aluminum foil along the end face of the connector, as shown in Figure 5-73.

Figure 5-73 Crimping the connector

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Step 7 Move the connector jacket to the connector body to wrap the connector shell, as shown in

A

B

C

A. Plug of connector

B. Jacket

C. Twisted-pair wires

Figure 5-74.

Figure 5-74 Wrapping the connector shell

Step 8 Repeat Step 1 through Step 7 to assemble the shielded RJ45 connector on the other end of the

network cable.

----End

5.1.3.5 Assembling an Unshielded RJ45 Connector and Ethernet Cable

Context

Figure 5-75 shows the components of an unshielded RJ45 connector and cable.

Figure 5-75 Components of an unshielded RJ45 connector and cable

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Procedure

C

16

White-Orange

White-Green

Orange

Blue

White-Blue

Green

White-Brown

Brown

Pin 8

Pin 1

Matching Pins of Wires

Wire Color

1

White-Orange

2

Orange

3

White-Green

4

Blue

5

White-Blue

6

Green

7

White-Brown

Step 1 Remove a 16-mm (0.63 in.) long section of the jacket, as shown in Figure 5-76.

When you remove the shield layer, do not damage the insulation of the twisted-pair cable.

Figure 5-76 Removing the jacket of a twisted-pair cable (unit: mm (in.))

Step 2 Align the four pairs of wires and cut the ends neatly, as shown in Figure 5-77. The

connections between the wires and the pins are listed in Table 5-9.

Figure 5-77 Connections between wires and pins (unit: mm (in.))

Table 5-9 Connections between wires and pins (using a straight-through cable as an example)

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Matching Pins of Wires

Wire Color

8

Brown

Step 3 Feed the cable into the plug, and crimp the connector, as shown in Figure 5-78.

When inserting the cable, check from the side or bore of the plug to ensure that the cable is completely seated in the plug.

Figure 5-78 Crimping the connector

Step 4 To complete the assembly of the other end, repeat steps 1 to 3.

----End

5.1.3.6 Checking the Appearance of Contact Strips

Context



To ensure proper contact between the crimped wires and the wire conductors, the heights and sizes of the contact strips must be standard and the same.



The contact strips must be parallel to each other, with an offset of less than ± 5°. The top margin of a strip must be parallel to the axis of the connector, with an offset of less than ± 10°.



To ensure conductivity, the surface of the contact strips must be clean.



The contact strips must be in good contact with the RJ45 socket. The plastic separators must remain intact and be aligned.



The contact strip blade must extend beyond the ends of the wires. The ends of the wires must be in contact with the edge of the RJ45. The distance between them must be less than 0.5 mm (0.02 in.).

Procedure

Step 1 Hold the crimped connector, with the front side facing you, and check whether the contact

strips are of the same height. The height should be 6.02 ± 0.13 mm (0.237 ± 0.005). If a measuring tool is not available, you can compare the connector with a standard connector. Figure 5-79 shows an unqualified piece, and Figure 5-80 shows a qualified piece.

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All unqualified pieces must be crimped again.

Figure 5-79 Contact strips of different heights

Figure 5-80 Contact strips of the same height

Step 2 Hold an RJ45 connector and turn it 45°. Observe the top edges of the metal contact strips.

Figure 5-81 shows an unqualified piece.

Figure 5-81 Unparallel contact strips of different heights

Step 3 Check whether the contact strips are clean. If they are not clean and the dirt cannot be

removed, replace it with a new RJ45 connector. Figure 5-82 shows an unqualified piece.

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Figure 5-82 Dirt on a contract strip

Step 4 Check whether the contact strips and the plastic separators are well aligned and intact. If a

separator is skewed and cannot be fixed, replace it with a new RJ45 connector. Figure 5-83 shows an unqualified piece.

Figure 5-83 Skewed plastic separators

Step 5 Hold the connector with the side facing towards you, and check whether you can see the

cross-sections of the wires. Ensure that the ends of the wires are in good contact with the edge of the RJ45, and that the contact strip blade extends beyond the ends of the wires and is crimped with the wires. If not, replace the connector. Figure 5-84 shows an unqualified piece.

Figure 5-84 Wires not in good contact with the edge of the RJ45

----End

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5.1.3.7 Testing the Connection of Assembled Cables

RJ45 Connector 1

RJ45 Connector 2

Core Wire Color

Twisted or Not

2 2 Orange

Twisted 1 1 Orange-White

6 6 Green

Twisted 3 3 Green-White

4 4 Blue

Twisted 5 5 Blue-White

8 8 Brown

Twisted 7 7 Brown-White

RJ45 Connector 1

RJ45 Connector 2

Core Wire Color

Twisted or Not

6 2 Orange

Twisted 3 1 Orange-White

2 6 Green

Twisted 1 3 Green-White

4 4 Blue

Twisted 5 5 Blue-White

8 8 Brown

Twisted 7 7 Brown-White

Context

Huawei provides two types of Ethernet cables: straight-through cables and crossover cables.



Straight-through cables are connected in a one-to-one manner. They are used to connect terminals such as a computer or switch to network devices. Table 5-10 lists the connections of core wires in a straight-through cable.

Table 5-10 Connections of core wires in a straight-through cable



Crossover cables are connected in a crossover manner. They are used to connect terminals such as two computers or switches. Table 5-11 lists the connections of core wires in a crossover cable.

Table 5-11 Connections of core wires in a straight crossover cable

Figure 5-85 shows the pins of an RJ45 connector.

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Pin8

Pin1

Procedure

Step 1 Feed both connectors of the cable into the ports of the cable tester. Step 2 After the connectors are properly inserted, turn on the tester. If the indicators from 1 to G turn

Figure 5-85 Pins of an RJ45 connector

on simultaneously, you can infer that the pins work normally and the wires are correctly connected.

Turn the switch to the S position to slow down lighting of the indicators so that you can see the indicators more clearly, as shown in Figure 5-86.

Figure 5-86 Testing the conduction and connections of wires

Step 3 Gently shake the connector and repeat Step 2 to check whether the metal contact strips are in

good contact with the core wires and Ethernet ports, as shown in Figure 5-87.

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Figure 5-87 Checking the reliability

The procedure for testing a crossover cable is the same as that for testing a straight-through cable except for the sequence in which the indicators turn on, which depends on the wire connections of a crossover cable.

The Ethernet cable is qualified if the indicators turn on in the following sequence: At the master (left) section of the tester, the indicators turn on in the sequence of 1-8-G. At the

slave (right) section of the tester, the indicators turn on in the sequence of 3-6-1-4-5-2-7-8-G. If the indicators do not come on in this sequence, the Ethernet cable is unqualified.

If a tester is not available, you can use a multimeter to perform a simple test, as shown in Figure 5-88.

Figure 5-88 Testing the connection of an Ethernet cable

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----End

Symptom

Cause

Preventive Measure



The device cannot be powered using PoE.



The device restarts frequently.



A large number of error packets exist on the device or services are interrupted.

A network cable has high resistance or is too long.

Before using network cables purchased from other suppliers, use a multimeter or other tools to measure cable resistance. If the resistance of a network cable does not comply with the quality requirement of the PoE standard, as shown in Table 5-13, replace the network cable.

Non-standard network cable connectors cause poor contact with device interfaces.

Before making a network cable, use a standard go-no go gauge to test the connectors purchased from other suppliers. Replace the connectors if they do not comply with the standard.

Wires in a network cable are connected to wrong pins.

After a network cable is made, use a conduction tester to measure cable connectivity. For test details, see 5.1.3.7 Testing the Connection of Assembled Cables.

A network cable connector is not crimped securely, causing poor contact between the network cable and pins in the connector.

When testing a network cable with a conduction tester, gently shake the cable connector and check whether indicators on the conduction tester are in normal state. If indicators 1 to G turn on in a wrong sequence, remake the network cable.

5.1.3.8 Common Network Cable Faults and Preventive Measures

Table 5-12 lists common network cable faults and preventive measures.

Table 5-12 Common network cable faults and preventive measures

The following methods are often used to test network cable resistance, and the test criteria are listed in Table 5-13:



Use a network cable tester (high-end cable tester of Fluke) to measure network cable resistance.

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

Standard

Total Resistance of a Network Cable

802.3af

≤ 20 ohms

802.3at

Maximum PD power consumption <

12.95 W

≤ 20 ohms

Maximum PD power consumption <

25.5 W

≤ 12.5 ohms

A. Body of connector

B. Back shell of connector

C. O-ring seal

D. Heat-shrink tubing

E. Cable jacket

F. Outer conductor of feeder cable

G. Inner conductor of feeder cable

H. Insulation layer of feeder cable

Connect multimeter probes to two ends of each wire in a network cable and check the resistance value on the multimeter.



Connect a network cable to an AP. Use a multimeter to test the resistance between pins 1 and 2 (or between pins 3 and 6, 4 and 5, or 7 and 8) on the other end of the cable. The cable's DC resistance approximately equals a half of the displayed value.

Table 5-13 PoE standard requirements for network cable quality

If an AP is connected to a switch or AC (excluding ACU2), you can run the virtual-cable-test command on the switch or AC to check network cable connectivity. For details, see the virtual-cable-test command in the command reference.

5.1.4 Assembling Feeders

5.1.4.1 Assembling the Straight Male Coaxial N Connector and the 1/2'' Feeder

Context

Figure 5-89 shows the components of an N coaxial connector and a 1/2" feeder cable.

Figure 5-89 Components of an N coaxial connector and a 1/2" feeder cable

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Procedure

Step 1 Cut the feeder cable, as shown in Figure 5-90.

Figure 5-90 Cutting a feeder cable (unit: mm)



Ensure that the feeder cable is cut with reference to the guide in the package box of the connector.



After you cut the feeder cable, ensure that the cross-section of the outer conductor is smooth, intact, and round.



Ensure that the feeder cable is cut at the wave crest of the outer conductor.



The inner conductor must be beveled, as shown in Figure 5-90.

Step 2 Use a brush to remove the dirt on the cross-section of the feeder cable. Step 3 Feed the feeder cable into the heat-shrink tubing, and cover the outer conductor of the feeder

cable with the O-ring seal, as shown in Figure 5-91.

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Figure 5-91 Installing the heat-shrink tubing and the O-ring seal

Step 4 Put the back shell of the connector onto the feeder cable. Tighten the back shell to the end of

the feeder cable, as shown in Figure 5-92.

Figure 5-92 Putting the back shell of the connector onto the feeder cable

Step 5 Mount the body of the connector onto the feeder cable so that the inner conductors of the

connector and feeder cable are connected. Use a spanner (27 N•m to 30 N•m torque

recommended) to fasten the body and back shell, as shown in Figure 5-93.

Figure 5-93 Fastening the body and back shell

Step 6 Push the heat-shrink tubing towards the connector, as shown in Figure 5-94. Then, heat the

tube.

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Figure 5-94 Assembled N connector

Step 7 After the components are assembled, install the connector, as shown in Figure 5-95.

Figure 5-95 Installing the connector

----End

5.1.4.2 Assembling a Straight Male Coaxial N Connector and an RG8U Feeder

Context

Figure 5-96 shows the coaxial N connector and RG8U feeder.

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Figure 5-96 Coaxial N connector and RG8U feeder

A: Connector body

B: Lining

C: Clip

D: Nut

E: Cable jacket

F: Shielded layer of the feeder

G: Aluminum foil of the feeder

H: Insulation medium of the feeder

I: Internal conductor of the feeder

- - -

Procedure

Step 1 Strip the feeder with the length shown in Figure 5-97.

Ensure that the shielded layer F is intact after the stripping.

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Figure 5-97 Stripping the feeder

Step 2 Route the Cable jacket (E) through the nut (D), as shown in Figure 5-98.

Figure 5-98 Installing the nut

Step 3 Install the clip (C) on the Cable jacket (E) and move the clip until the clip is close to the Cable

jacket, as shown in Figure 5-99.

Figure 5-99 Installing the clip

Step 4 Peel off the shielded layer (F) to the direction of the clip (C) so that the aluminum foil (G) is

exposed, as shown in Figure 5-100.

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Figure 5-100 Peeling off the shielded layer

Step 5 Install the lining (B) on the feeder and tightly crimp the shielded layer (F) of the feeder, as

shown in Figure 5-101.

Figure 5-101 Installing the lining

Step 6 Cut off the aluminum foil (G) and insulation medium (H) along the end face of the lining (B).

Ensure that the length of the conducting line inside the feeder is 4.5 mm, as shown in Figure 5-102.

Figure 5-102 Cutting off the aluminum foil and insulation medium of the feeder

Step 7 Use the file to taper the internal conductor (I) of the feeder, as shown in Figure 5-103.

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Figure 5-103 Tapering the internal conductor of the feeder

Step 8 Use a brush to remove impurities from the cross section of the feeder, as shown in Figure

5-104.

Figure 5-104 Clearing impurities

Step 9 Insert the half-finished part into the main body of the connector (A) and rotate the nut (D) and

the connector's main body until you cannot rotate further, as shown in Figure 5-105.

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Figure 5-105 Installing the connector's main body

Step 10 Use a wrench to fix the nut (D) to connector's main body (A) with recommended tightening

torque 15 N•m, as shown in Figure 5-106.

Figure 5-106 Fixing the nut to the connector shell body

Step 11 Figure 5-107 shows the effect drawing after the assembling is complete.

Figure 5-107 Effect drawing of the straight male coaxial N connector

----End

Huawei AP7052DN User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual